<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title></title>
    <link
            href="https://cdn.bootcss.com/mui/3.7.1/css/mui.min.css"
            rel="stylesheet"
    />
    <script src="https://cdn.bootcss.com/mui/3.7.1/js/mui.min.js"></script>
</head>

<style type="text/css"></style>
<body>
    <br>
    <br>
    <h1>Page3</h1>
    <br>
    <button onclick="mp.navigateBack()">返回上一页</button>

    <button onclick="mp.navigateBack({delta:2})">返回首页</button>
</body>
</html>
